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KMID : 0378020090520030047
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New Medical Journal
2009 Volume.52 No. 3 p.47 ~ p.53
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Prevalence and Significance of Resting Wall Motion Abnormalities in 2-Dimensional Echocardiography According to Angina Types
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Yang Po-Song
Her Sung-Ho
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Abstract
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Objectives and Background: This prospective study was designed to test the hypothesis that the assessment of left ventricular regional wall motion abnormality (WMA) at the time of visiting hospital presentation provides valuable diagnostic and prognostic information in patients with various angina types.
Methods and Results: A two-dimensional (2D) echocardiogram was recorded shortly after admission in 3310 patients with nondiagnostic cheat pain before coronary angiogram (CAG). We studied 1251 patients of chronic stable angina (SA) and 834 patients of unstable angina (UA) who had no history or electrocardiographic evidence of myocardial infarction and studied 477 patients of non-ST elevation myocardial infarction (NSTEMI) and 748 patients of ST elevation myocardial infarction (STEMI) who subsequently treated by PCI. We excluded normal coronary angiogram and variant angina by CAG. Of the total 3310 patients, 256 (20.5%) of 1251 SA, 229 (27.5%) of 834 UA, 371 (77.7%) of 477 NSTEMI and 705 (94.3%) of 748 STEMI patients had a regional WMA. There were significant differences for left ventricular WMA between SA and UA group (20.5% vs 27.5%, p=0.011, odds ratio; 1.476), between SA and NSTEMI group (20.5% vs 77.7%, p<0.001, odds ratio; 13.557) and between SA and STEMI group (20.5% vs 94.3%, p<0.001, odds ratio; 64.661).
Conclusions: These data suggest that in patients presenting with nondiagnostic cheat pain, an early assessment of regional wall motion by 2D echocardiography can reliably identify patients with myocardial infarction, but is little valuable and useful for the detection of patients with SA and UA.
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KEYWORD
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Wall motion abnormality, Angina
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